#include "stdio.h"

int twoDigitAdd(int a, int b) {
    //在此处添加相应代码
    int sum;
	if(a>=100)a %= 100;
	if(b>=100)b %= 100;
	sum = a + b;
	if(sum>=100)sum %= 100;
	return sum;
}

int main(void)
{
    int a = 45;
    int b = 56;
    printf("%d add %d is %d", a, b, twoDigitAdd(a, b));
    return 0;
}

